A camada serapilheira-solo em áreas de reflorestamento de matas ciliares

Abstract

Deforestation of native forests results in changes in the ecological functions of terrestrial ecosystems such nutrient cycling. Riparian forests link terrestrial and aquatic environments and thus play an important role in the functioning biogeochemical cycles. The litter-soil layer is the main driver of the nutrient cycling and its return to the system through decomposition, which is the mineralization of organic matter. This process is performed by microorganisms and is affected by litter chemical composition, the environmental conditions of temperature and humidity, and soil attributes, including physical and chemical attributes. Thus, parameters such as litter decomposition and soil properties like fertility and microbial community can be used to indicate ecosystem recovery. This study aimed to evaluate the litter-soil layer in riparian forest reforestation areas as a parameter to evaluate ecological succession in watersheds in reforested streams in the region of São Carlos. Six reforested areas and two control areas were selected for monitoring litter deposition, decomposition and chemical composition. The vegetation structure and soil attributes in these areas were also evaluated and characterized. The vegetation structure presented a good fit with soil properties in the soil litter layer. Thus, the ecosystem service of nutrient cycling in riparian forests is restored as vegetation develops. The results of this study can contribute to indicate parameters for the implementation of future restoration projects and for the better management of restored areas